jar resources in jnlp are not signed by the same certificate

Question

I've been working with web start for a couple years now and have experience with signing the jars and what not. I am taking my first attempt at deploying a RCP app with web start and though I have in fact signed all of the jars with the same certificate I keep getting this error: 'jar resources in jnlp are not signed by the same certificate'

Has anyone else came across this? If so, any ideas on how to fix?

Answer 1

When I had similar problems after checking the jars it turned out that some 3rd party jar was signed by someone else.

You should create a separate jnlp file for the jars signed by the other certificate and read this jnlp from your jnlp file:

<resources>
  ...
  <extension name="other" href="other.jnlp"/>
</resources>

Here or here you can find an example.